Objective-C and Box2D multiple sprite touch detection - objective-c

Question

I have created an array of enemies and when I add an enemy I add the appropriate box2d code, however I have found that none of my enemies can be touched, I am not sure what is causing this but from what I can tell it never returns a fixture.
I have tried setting the user data but then I do not get multiple items.
This is how I add my sprite etc
for (int i = 0; i < EnemyType_MAX; i++)
{
CCArray* enemiesOfType = [enemies objectAtIndex:i];
int numEnemiesOfType = [enemiesOfType capacity];
for (int j = 0; j < numEnemiesOfType; j++)
{
EnemyEntity* enemy = [[EnemyEntity alloc]init:_gameScene enemyType:EnemyTypeBreadman];
[batch addChild:enemy z:0 tag:i];
[enemiesOfType addObject:enemy];
[allEnemies addObject:enemy];
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set(self.position.x/PTM_RATIO, self.position.y/PTM_RATIO);
bodyDef.userData = self;
b2Body *body = _gameScene.world->CreateBody(&bodyDef);
b2CircleShape circle;
circle.m_radius = 26.0/PTM_RATIO;
// Define the dynamic body fixture.
b2FixtureDef fixtureDef;
fixtureDef.shape = &circle;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
body->CreateFixture(&fixtureDef);
}
}
I then use my touch handler to try and return what item has been touched
- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
//NSLog(#"ccTouchesBegan %#", (_mouseJoint!= NULL) ? #"YES" : #"FALSE" );
if (_gameScene.mouseJoint != NULL) return;
UITouch *myTouch = [touches anyObject];
CGPoint location = [myTouch locationInView:[myTouch view]];
location = [[CCDirector sharedDirector] convertToGL:location];
float move = 0.0f, x1, y1, z1;
[_gameScene.camera centerX:&x1 centerY:&y1 centerZ:&z1];
b2Vec2 locationWorld = b2Vec2((location.x+x1)/PTM_RATIO, (location.y+y1)/PTM_RATIO);
NSLog(#"ccTouchesBegan %#",NSStringFromCGPoint(location));
b2AABB aabb;
aabb.lowerBound.Set(-1.0f+locationWorld.x, -1.0f+locationWorld.y);
aabb.upperBound.Set(1.0f+locationWorld.x, 1.0f+locationWorld.y);
b2Vec2 callPoint;
callPoint.Set (locationWorld.x,locationWorld.y);
QueryCallback callback(callPoint);
_gameScene.world->QueryAABB(&callback, aabb);
b2Body* nbody = NULL;
if (callback.m_fixture)
{
nbody= callback.m_fixture->GetBody();
}
if (nbody)
{
b2BodyDef bodyDef;
b2Body* groundBody = _gameScene.world->CreateBody(&bodyDef);
b2MouseJointDef md;
md.bodyA = groundBody;
md.bodyB = nbody;
md.target = locationWorld;
#ifdef TARGET_FLOAT32_IS_FIXED
md.maxForce = (nbody->GetMass() < 16.0)? (1000.0f * nbody->GetMass()) : f loat32(16000.0);
#else
md.maxForce = 1000.0f * nbody->GetMass();
#endif
_gameScene.mouseJoint = (b2MouseJoint *)_gameScene.world->CreateJoint(&md);
nbody->SetAwake(true);
}
}

Answer 1

In your init method, right after the if statement, is this in your code:
if(self = [super init]){
self.isTouchEnabled = YES;
EDIT------------------
Instead of using ccArray, you should use this:
CCSprite *_anArray[x];
When I deal with sprites I always put them in a sprite array, I declared it in the header. You also have to do the #property(nonatomic, retain) NSMutableArray *arrowArray; in the .h file and in the .m #synthesize arrowArray = _arrowArray;
Then I just added all my sprites into that array. Should work.